Home / 1,562.28-2,155.44-899.04

Finding the Fourth Proportional to 1,562.28, 2,155.44 and 899.04

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Solution

The fourth proportional to 1,562.28, 2,155.44 and 899.04 is: 1,240.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.28 : 2,155.44 = 899.04 : x
  2. Step 2: Convert to fraction form
    1,562.28/2,155.44 = 899.04/x
  3. Step 3: Cross multiply
    1,562.28x = 2,155.44 × 899.04
  4. Step 4: Simplify right side
    1,562.28x = 1,937,826.78
  5. Step 5: Solve for x
    x = 1,937,826.78/1,562.28
  6. Step 6: Final answer
    x = 1,240.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.